./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1251.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1251.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32adbfac5f3e3ea232180afd045da0027ca6d993 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1251.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32adbfac5f3e3ea232180afd045da0027ca6d993 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-10-24 23:27:00,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:27:00,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:27:00,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:27:00,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:27:00,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:27:00,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:27:00,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:27:00,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:27:00,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:27:00,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:27:00,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:27:00,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:27:00,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:27:00,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:27:00,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:27:00,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:27:00,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:27:00,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:27:00,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:27:00,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:27:00,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:27:00,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:27:00,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:27:00,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:27:00,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:27:00,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:27:00,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:27:00,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:27:00,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:27:00,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:27:00,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:27:00,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:27:00,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:27:00,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:27:00,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:27:00,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:27:00,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:27:00,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:27:00,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:27:00,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:27:00,996 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 23:27:01,057 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:27:01,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:27:01,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:27:01,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:27:01,062 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:27:01,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:27:01,063 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:27:01,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 23:27:01,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:27:01,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:27:01,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:27:01,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:27:01,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:27:01,066 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:27:01,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:27:01,066 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:27:01,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:27:01,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:27:01,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:27:01,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:27:01,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:27:01,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:27:01,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:27:01,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:27:01,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:27:01,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 23:27:01,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 23:27:01,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:27:01,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:27:01,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32adbfac5f3e3ea232180afd045da0027ca6d993 [2020-10-24 23:27:01,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:27:01,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:27:01,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:27:01,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:27:01,562 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:27:01,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2020-10-24 23:27:01,643 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b2675df3/53db624919484cfdbfcc49f4ecb60151/FLAGf639d7186 [2020-10-24 23:27:02,295 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:27:02,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2020-10-24 23:27:02,305 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b2675df3/53db624919484cfdbfcc49f4ecb60151/FLAGf639d7186 [2020-10-24 23:27:02,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b2675df3/53db624919484cfdbfcc49f4ecb60151 [2020-10-24 23:27:02,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:27:02,691 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:27:02,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:27:02,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:27:02,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:27:02,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:27:02" (1/1) ... [2020-10-24 23:27:02,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d36184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:02, skipping insertion in model container [2020-10-24 23:27:02,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:27:02" (1/1) ... [2020-10-24 23:27:02,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:27:02,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:27:03,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:27:03,040 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:27:03,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:27:03,096 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:27:03,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:03 WrapperNode [2020-10-24 23:27:03,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:27:03,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:27:03,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:27:03,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:27:03,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:03" (1/1) ... [2020-10-24 23:27:03,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:03" (1/1) ... [2020-10-24 23:27:03,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:27:03,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:27:03,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:27:03,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:27:03,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:03" (1/1) ... [2020-10-24 23:27:03,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:03" (1/1) ... [2020-10-24 23:27:03,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:03" (1/1) ... [2020-10-24 23:27:03,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:03" (1/1) ... [2020-10-24 23:27:03,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:03" (1/1) ... [2020-10-24 23:27:03,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:03" (1/1) ... [2020-10-24 23:27:03,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:03" (1/1) ... [2020-10-24 23:27:03,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:27:03,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:27:03,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:27:03,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:27:03,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:27:03,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 23:27:03,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:27:03,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 23:27:03,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:27:03,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:27:03,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 23:27:03,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:27:04,120 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:27:04,120 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-10-24 23:27:04,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:27:04 BoogieIcfgContainer [2020-10-24 23:27:04,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:27:04,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:27:04,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:27:04,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:27:04,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:27:02" (1/3) ... [2020-10-24 23:27:04,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ef4388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:27:04, skipping insertion in model container [2020-10-24 23:27:04,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:03" (2/3) ... [2020-10-24 23:27:04,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ef4388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:27:04, skipping insertion in model container [2020-10-24 23:27:04,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:27:04" (3/3) ... [2020-10-24 23:27:04,137 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2020-10-24 23:27:04,154 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:27:04,160 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-24 23:27:04,176 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-24 23:27:04,223 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:27:04,223 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:27:04,224 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:27:04,224 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:27:04,224 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:27:04,225 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:27:04,225 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:27:04,225 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:27:04,251 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-24 23:27:04,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-24 23:27:04,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:04,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:04,259 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:04,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:04,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2020-10-24 23:27:04,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:27:04,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260811515] [2020-10-24 23:27:04,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:27:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:04,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:04,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260811515] [2020-10-24 23:27:04,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:04,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 23:27:04,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369233552] [2020-10-24 23:27:04,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 23:27:04,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:27:04,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 23:27:04,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 23:27:04,532 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 4 states. [2020-10-24 23:27:04,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:04,667 INFO L93 Difference]: Finished difference Result 92 states and 136 transitions. [2020-10-24 23:27:04,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 23:27:04,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-24 23:27:04,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:04,681 INFO L225 Difference]: With dead ends: 92 [2020-10-24 23:27:04,681 INFO L226 Difference]: Without dead ends: 50 [2020-10-24 23:27:04,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 23:27:04,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-24 23:27:04,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-10-24 23:27:04,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-24 23:27:04,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2020-10-24 23:27:04,728 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 16 [2020-10-24 23:27:04,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:04,729 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2020-10-24 23:27:04,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 23:27:04,729 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2020-10-24 23:27:04,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-24 23:27:04,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:04,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:04,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 23:27:04,732 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:04,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:04,733 INFO L82 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2020-10-24 23:27:04,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:27:04,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346501940] [2020-10-24 23:27:04,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:27:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:04,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:04,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346501940] [2020-10-24 23:27:04,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:04,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 23:27:04,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266318014] [2020-10-24 23:27:04,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 23:27:04,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:27:04,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 23:27:04,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 23:27:04,867 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand 4 states. [2020-10-24 23:27:04,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:04,970 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2020-10-24 23:27:04,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 23:27:04,971 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-24 23:27:04,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:04,974 INFO L225 Difference]: With dead ends: 77 [2020-10-24 23:27:04,974 INFO L226 Difference]: Without dead ends: 64 [2020-10-24 23:27:04,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 23:27:04,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-24 23:27:04,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2020-10-24 23:27:04,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-24 23:27:04,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-10-24 23:27:04,998 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2020-10-24 23:27:04,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:04,999 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-10-24 23:27:04,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 23:27:04,999 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-10-24 23:27:05,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-24 23:27:05,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:05,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:05,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 23:27:05,001 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:05,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:05,002 INFO L82 PathProgramCache]: Analyzing trace with hash -674173253, now seen corresponding path program 1 times [2020-10-24 23:27:05,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:27:05,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008897522] [2020-10-24 23:27:05,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:27:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:05,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:05,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008897522] [2020-10-24 23:27:05,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:05,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 23:27:05,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110079517] [2020-10-24 23:27:05,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 23:27:05,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:27:05,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 23:27:05,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 23:27:05,114 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 4 states. [2020-10-24 23:27:05,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:05,203 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2020-10-24 23:27:05,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 23:27:05,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-24 23:27:05,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:05,205 INFO L225 Difference]: With dead ends: 79 [2020-10-24 23:27:05,206 INFO L226 Difference]: Without dead ends: 66 [2020-10-24 23:27:05,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 23:27:05,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-24 23:27:05,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2020-10-24 23:27:05,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-24 23:27:05,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-10-24 23:27:05,219 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-10-24 23:27:05,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:05,220 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-10-24 23:27:05,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 23:27:05,220 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-10-24 23:27:05,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-24 23:27:05,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:05,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:05,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 23:27:05,222 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:05,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:05,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1345927737, now seen corresponding path program 1 times [2020-10-24 23:27:05,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:27:05,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997462049] [2020-10-24 23:27:05,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:27:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:05,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:05,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997462049] [2020-10-24 23:27:05,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:05,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 23:27:05,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2958850] [2020-10-24 23:27:05,318 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 23:27:05,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:27:05,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 23:27:05,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 23:27:05,322 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 4 states. [2020-10-24 23:27:05,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:05,445 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2020-10-24 23:27:05,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 23:27:05,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-24 23:27:05,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:05,448 INFO L225 Difference]: With dead ends: 81 [2020-10-24 23:27:05,448 INFO L226 Difference]: Without dead ends: 68 [2020-10-24 23:27:05,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 23:27:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-24 23:27:05,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 47. [2020-10-24 23:27:05,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-24 23:27:05,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-10-24 23:27:05,458 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 20 [2020-10-24 23:27:05,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:05,458 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-10-24 23:27:05,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 23:27:05,458 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-10-24 23:27:05,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-24 23:27:05,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:05,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:05,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 23:27:05,460 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:05,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:05,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2020-10-24 23:27:05,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:27:05,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808299875] [2020-10-24 23:27:05,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:27:05,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:05,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:05,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808299875] [2020-10-24 23:27:05,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:05,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-24 23:27:05,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386873761] [2020-10-24 23:27:05,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 23:27:05,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:27:05,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 23:27:05,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 23:27:05,582 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 3 states. [2020-10-24 23:27:05,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:05,608 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2020-10-24 23:27:05,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 23:27:05,609 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-24 23:27:05,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:05,611 INFO L225 Difference]: With dead ends: 50 [2020-10-24 23:27:05,611 INFO L226 Difference]: Without dead ends: 48 [2020-10-24 23:27:05,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 23:27:05,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-24 23:27:05,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-24 23:27:05,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-24 23:27:05,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 63 transitions. [2020-10-24 23:27:05,620 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 63 transitions. Word has length 21 [2020-10-24 23:27:05,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:05,621 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 63 transitions. [2020-10-24 23:27:05,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 23:27:05,621 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2020-10-24 23:27:05,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-24 23:27:05,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:05,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:05,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 23:27:05,623 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:05,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:05,624 INFO L82 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2020-10-24 23:27:05,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:27:05,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338413181] [2020-10-24 23:27:05,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:27:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:27:05,670 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:27:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:27:05,710 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:27:05,765 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 23:27:05,766 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:27:05,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 23:27:05,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:27:05 BoogieIcfgContainer [2020-10-24 23:27:05,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:27:05,810 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:27:05,810 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:27:05,812 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:27:05,812 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:27:04" (3/4) ... [2020-10-24 23:27:05,817 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 23:27:05,820 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:27:05,823 INFO L168 Benchmark]: Toolchain (without parser) took 3137.91 ms. Allocated memory was 44.0 MB in the beginning and 67.1 MB in the end (delta: 23.1 MB). Free memory was 21.0 MB in the beginning and 30.2 MB in the end (delta: -9.3 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2020-10-24 23:27:05,824 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 44.0 MB. Free memory was 26.7 MB in the beginning and 26.6 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:27:05,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.59 ms. Allocated memory is still 44.0 MB. Free memory was 29.6 MB in the beginning and 19.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-24 23:27:05,826 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.23 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 19.2 MB in the beginning and 37.6 MB in the end (delta: -18.4 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-10-24 23:27:05,827 INFO L168 Benchmark]: Boogie Preprocessor took 44.10 ms. Allocated memory is still 54.5 MB. Free memory was 37.6 MB in the beginning and 36.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:27:05,828 INFO L168 Benchmark]: RCFGBuilder took 912.72 ms. Allocated memory is still 54.5 MB. Free memory was 35.9 MB in the beginning and 25.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2020-10-24 23:27:05,829 INFO L168 Benchmark]: TraceAbstraction took 1681.29 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 25.2 MB in the beginning and 30.7 MB in the end (delta: -5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-24 23:27:05,830 INFO L168 Benchmark]: Witness Printer took 10.92 ms. Allocated memory is still 67.1 MB. Free memory was 30.7 MB in the beginning and 30.2 MB in the end (delta: 441.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:27:05,835 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 44.0 MB. Free memory was 26.7 MB in the beginning and 26.6 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 377.59 ms. Allocated memory is still 44.0 MB. Free memory was 29.6 MB in the beginning and 19.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.23 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 19.2 MB in the beginning and 37.6 MB in the end (delta: -18.4 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.10 ms. Allocated memory is still 54.5 MB. Free memory was 37.6 MB in the beginning and 36.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 912.72 ms. Allocated memory is still 54.5 MB. Free memory was 35.9 MB in the beginning and 25.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1681.29 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 25.2 MB in the beginning and 30.7 MB in the end (delta: -5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Witness Printer took 10.92 ms. Allocated memory is still 67.1 MB. Free memory was 30.7 MB in the beginning and 30.2 MB in the end (delta: 441.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 75. Possible FailurePath: [L66] float x = __VERIFIER_nondet_float(); [L67] float y = __VERIFIER_nondet_float(); [L57] return x != x; [L69] EXPR isnan_float(x) && !isnan_float(y) [L57] return x != x; [L69] EXPR isnan_float(x) && !isnan_float(y) [L69-L70] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L69-L70] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; [L72] float res = fmax_float(x, y); [L57] return x != x; [L75] EXPR isnan_float(x) && !isnan_float(y) [L57] return x != x; [L75] EXPR isnan_float(x) && !isnan_float(y) [L75] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L3] __assert_fail("0", "float_req_bl_1251.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 49 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 343 SDtfs, 79 SDslu, 503 SDs, 0 SdLazy, 88 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 62 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 1865 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-10-24 23:27:08,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:27:08,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:27:08,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:27:08,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:27:08,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:27:08,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:27:08,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:27:08,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:27:08,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:27:08,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:27:08,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:27:08,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:27:08,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:27:08,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:27:08,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:27:08,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:27:08,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:27:08,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:27:08,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:27:08,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:27:08,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:27:08,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:27:08,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:27:08,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:27:08,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:27:08,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:27:08,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:27:08,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:27:08,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:27:08,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:27:08,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:27:08,507 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:27:08,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:27:08,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:27:08,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:27:08,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:27:08,511 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:27:08,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:27:08,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:27:08,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:27:08,516 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 23:27:08,558 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:27:08,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:27:08,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:27:08,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:27:08,565 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:27:08,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:27:08,566 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:27:08,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:27:08,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:27:08,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:27:08,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:27:08,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:27:08,572 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 23:27:08,572 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 23:27:08,572 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:27:08,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:27:08,573 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:27:08,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:27:08,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:27:08,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:27:08,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:27:08,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:27:08,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:27:08,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:27:08,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:27:08,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:27:08,575 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 23:27:08,576 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 23:27:08,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:27:08,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:27:08,576 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 23:27:08,577 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32adbfac5f3e3ea232180afd045da0027ca6d993 [2020-10-24 23:27:09,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:27:09,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:27:09,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:27:09,089 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:27:09,089 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:27:09,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2020-10-24 23:27:09,176 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97763ac06/1c8a3693edd04c78b9559cb4a730548d/FLAG77d447624 [2020-10-24 23:27:09,835 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:27:09,835 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2020-10-24 23:27:09,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97763ac06/1c8a3693edd04c78b9559cb4a730548d/FLAG77d447624 [2020-10-24 23:27:10,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97763ac06/1c8a3693edd04c78b9559cb4a730548d [2020-10-24 23:27:10,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:27:10,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:27:10,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:27:10,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:27:10,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:27:10,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:27:10" (1/1) ... [2020-10-24 23:27:10,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e23cacc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:10, skipping insertion in model container [2020-10-24 23:27:10,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:27:10" (1/1) ... [2020-10-24 23:27:10,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:27:10,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:27:10,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:27:10,541 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:27:10,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:27:10,595 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:27:10,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:10 WrapperNode [2020-10-24 23:27:10,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:27:10,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:27:10,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:27:10,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:27:10,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:10" (1/1) ... [2020-10-24 23:27:10,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:10" (1/1) ... [2020-10-24 23:27:10,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:27:10,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:27:10,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:27:10,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:27:10,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:10" (1/1) ... [2020-10-24 23:27:10,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:10" (1/1) ... [2020-10-24 23:27:10,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:10" (1/1) ... [2020-10-24 23:27:10,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:10" (1/1) ... [2020-10-24 23:27:10,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:10" (1/1) ... [2020-10-24 23:27:10,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:10" (1/1) ... [2020-10-24 23:27:10,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:10" (1/1) ... [2020-10-24 23:27:10,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:27:10,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:27:10,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:27:10,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:27:10,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:27:10,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 23:27:10,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:27:10,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 23:27:10,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:27:10,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:27:10,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-24 23:27:10,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:27:11,548 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:27:11,549 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-10-24 23:27:11,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:27:11 BoogieIcfgContainer [2020-10-24 23:27:11,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:27:11,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:27:11,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:27:11,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:27:11,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:27:10" (1/3) ... [2020-10-24 23:27:11,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2383c828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:27:11, skipping insertion in model container [2020-10-24 23:27:11,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:27:10" (2/3) ... [2020-10-24 23:27:11,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2383c828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:27:11, skipping insertion in model container [2020-10-24 23:27:11,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:27:11" (3/3) ... [2020-10-24 23:27:11,565 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2020-10-24 23:27:11,582 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:27:11,588 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-24 23:27:11,603 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-24 23:27:11,646 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:27:11,646 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:27:11,646 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:27:11,646 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:27:11,646 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:27:11,647 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:27:11,647 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:27:11,648 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:27:11,674 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-24 23:27:11,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-24 23:27:11,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:11,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:11,690 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:11,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:11,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2020-10-24 23:27:11,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:27:11,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324366428] [2020-10-24 23:27:11,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 23:27:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:11,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 23:27:11,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:27:11,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:11,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:27:11,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:11,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1324366428] [2020-10-24 23:27:11,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:11,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 23:27:11,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281379166] [2020-10-24 23:27:11,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:27:11,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:27:11,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:27:11,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:27:11,940 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2020-10-24 23:27:11,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:11,976 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2020-10-24 23:27:11,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:27:11,978 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-10-24 23:27:11,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:12,016 INFO L225 Difference]: With dead ends: 84 [2020-10-24 23:27:12,016 INFO L226 Difference]: Without dead ends: 43 [2020-10-24 23:27:12,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:27:12,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-24 23:27:12,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-24 23:27:12,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-24 23:27:12,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2020-10-24 23:27:12,077 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 16 [2020-10-24 23:27:12,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:12,078 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2020-10-24 23:27:12,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:27:12,078 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2020-10-24 23:27:12,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-24 23:27:12,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:12,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:12,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 23:27:12,295 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:12,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:12,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1262247077, now seen corresponding path program 1 times [2020-10-24 23:27:12,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:27:12,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630581314] [2020-10-24 23:27:12,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-24 23:27:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:12,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 23:27:12,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:27:12,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:12,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:27:12,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:12,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630581314] [2020-10-24 23:27:12,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:12,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-24 23:27:12,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425875114] [2020-10-24 23:27:12,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 23:27:12,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:27:12,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 23:27:12,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 23:27:12,463 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand 4 states. [2020-10-24 23:27:12,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:12,549 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2020-10-24 23:27:12,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 23:27:12,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-24 23:27:12,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:12,554 INFO L225 Difference]: With dead ends: 82 [2020-10-24 23:27:12,554 INFO L226 Difference]: Without dead ends: 50 [2020-10-24 23:27:12,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 23:27:12,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-24 23:27:12,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-10-24 23:27:12,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-24 23:27:12,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2020-10-24 23:27:12,564 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 17 [2020-10-24 23:27:12,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:12,564 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2020-10-24 23:27:12,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 23:27:12,565 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2020-10-24 23:27:12,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-24 23:27:12,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:12,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:12,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 23:27:12,787 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:12,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:12,790 INFO L82 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2020-10-24 23:27:12,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:27:12,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100282688] [2020-10-24 23:27:12,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-24 23:27:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:12,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 23:27:12,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:27:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:12,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:27:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:12,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100282688] [2020-10-24 23:27:12,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:12,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 23:27:12,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189006168] [2020-10-24 23:27:12,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 23:27:12,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:27:12,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 23:27:12,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 23:27:12,964 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand 6 states. [2020-10-24 23:27:13,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:13,082 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2020-10-24 23:27:13,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 23:27:13,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-24 23:27:13,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:13,084 INFO L225 Difference]: With dead ends: 96 [2020-10-24 23:27:13,085 INFO L226 Difference]: Without dead ends: 83 [2020-10-24 23:27:13,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-24 23:27:13,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-24 23:27:13,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 47. [2020-10-24 23:27:13,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-24 23:27:13,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-10-24 23:27:13,093 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2020-10-24 23:27:13,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:13,093 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-10-24 23:27:13,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 23:27:13,094 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-10-24 23:27:13,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-24 23:27:13,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:13,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:13,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 23:27:13,311 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:13,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:13,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2020-10-24 23:27:13,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:27:13,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270846501] [2020-10-24 23:27:13,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-24 23:27:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:13,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-24 23:27:13,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:27:13,426 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:13,469 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:13,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:27:13,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:13,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270846501] [2020-10-24 23:27:13,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:13,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-10-24 23:27:13,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088448126] [2020-10-24 23:27:13,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 23:27:13,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:27:13,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 23:27:13,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-24 23:27:13,581 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 10 states. [2020-10-24 23:27:14,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:14,063 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2020-10-24 23:27:14,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 23:27:14,064 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-10-24 23:27:14,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:14,066 INFO L225 Difference]: With dead ends: 149 [2020-10-24 23:27:14,066 INFO L226 Difference]: Without dead ends: 140 [2020-10-24 23:27:14,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-24 23:27:14,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-24 23:27:14,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2020-10-24 23:27:14,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-24 23:27:14,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2020-10-24 23:27:14,081 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 21 [2020-10-24 23:27:14,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:14,082 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2020-10-24 23:27:14,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 23:27:14,083 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2020-10-24 23:27:14,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-24 23:27:14,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:14,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:14,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-24 23:27:14,286 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:14,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:14,288 INFO L82 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2020-10-24 23:27:14,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:27:14,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586528630] [2020-10-24 23:27:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-24 23:27:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:14,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-24 23:27:14,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:27:14,429 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:14,431 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:14,456 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:14,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:27:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:14,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586528630] [2020-10-24 23:27:14,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:14,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2020-10-24 23:27:14,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815713855] [2020-10-24 23:27:14,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-24 23:27:14,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:27:14,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-24 23:27:14,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-24 23:27:14,797 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand 15 states. [2020-10-24 23:27:15,899 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2020-10-24 23:27:16,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:16,123 INFO L93 Difference]: Finished difference Result 180 states and 237 transitions. [2020-10-24 23:27:16,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 23:27:16,124 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2020-10-24 23:27:16,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:16,127 INFO L225 Difference]: With dead ends: 180 [2020-10-24 23:27:16,127 INFO L226 Difference]: Without dead ends: 178 [2020-10-24 23:27:16,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2020-10-24 23:27:16,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-24 23:27:16,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 89. [2020-10-24 23:27:16,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-24 23:27:16,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2020-10-24 23:27:16,144 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 22 [2020-10-24 23:27:16,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:16,145 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2020-10-24 23:27:16,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-24 23:27:16,145 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2020-10-24 23:27:16,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-24 23:27:16,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:16,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:16,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-24 23:27:16,360 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:16,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:16,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1845695531, now seen corresponding path program 1 times [2020-10-24 23:27:16,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:27:16,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729564550] [2020-10-24 23:27:16,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-24 23:27:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:16,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-24 23:27:16,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:27:16,457 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:16,497 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:16,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:16,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:27:16,547 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-24 23:27:16,548 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-24 23:27:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:16,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729564550] [2020-10-24 23:27:16,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:16,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-24 23:27:16,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150361263] [2020-10-24 23:27:16,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 23:27:16,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:27:16,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 23:27:16,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-24 23:27:16,612 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand 9 states. [2020-10-24 23:27:17,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:17,162 INFO L93 Difference]: Finished difference Result 166 states and 219 transitions. [2020-10-24 23:27:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 23:27:17,163 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-24 23:27:17,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:17,165 INFO L225 Difference]: With dead ends: 166 [2020-10-24 23:27:17,165 INFO L226 Difference]: Without dead ends: 131 [2020-10-24 23:27:17,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-10-24 23:27:17,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-24 23:27:17,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2020-10-24 23:27:17,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-24 23:27:17,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2020-10-24 23:27:17,180 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 23 [2020-10-24 23:27:17,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:17,180 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2020-10-24 23:27:17,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 23:27:17,180 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2020-10-24 23:27:17,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-24 23:27:17,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:17,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:17,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-24 23:27:17,396 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:17,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:17,397 INFO L82 PathProgramCache]: Analyzing trace with hash 156888005, now seen corresponding path program 1 times [2020-10-24 23:27:17,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:27:17,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358239936] [2020-10-24 23:27:17,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-24 23:27:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:17,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 23:27:17,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:27:17,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:17,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:27:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:17,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358239936] [2020-10-24 23:27:17,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:17,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 23:27:17,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008892385] [2020-10-24 23:27:17,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 23:27:17,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:27:17,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 23:27:17,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 23:27:17,549 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand 6 states. [2020-10-24 23:27:17,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:17,654 INFO L93 Difference]: Finished difference Result 157 states and 199 transitions. [2020-10-24 23:27:17,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 23:27:17,655 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-24 23:27:17,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:17,656 INFO L225 Difference]: With dead ends: 157 [2020-10-24 23:27:17,656 INFO L226 Difference]: Without dead ends: 141 [2020-10-24 23:27:17,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-24 23:27:17,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-24 23:27:17,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 93. [2020-10-24 23:27:17,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-24 23:27:17,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2020-10-24 23:27:17,672 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2020-10-24 23:27:17,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:17,673 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2020-10-24 23:27:17,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 23:27:17,673 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2020-10-24 23:27:17,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-24 23:27:17,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:17,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:17,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-24 23:27:17,892 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:17,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:17,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1621213116, now seen corresponding path program 1 times [2020-10-24 23:27:17,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:27:17,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519323155] [2020-10-24 23:27:17,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-24 23:27:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:17,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-24 23:27:17,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:27:17,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:17,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:27:17,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:17,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519323155] [2020-10-24 23:27:17,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:17,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-24 23:27:17,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207984056] [2020-10-24 23:27:17,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-24 23:27:17,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:27:17,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-24 23:27:17,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 23:27:17,982 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 3 states. [2020-10-24 23:27:18,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:18,013 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2020-10-24 23:27:18,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 23:27:18,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-10-24 23:27:18,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:18,015 INFO L225 Difference]: With dead ends: 96 [2020-10-24 23:27:18,015 INFO L226 Difference]: Without dead ends: 94 [2020-10-24 23:27:18,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-24 23:27:18,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-24 23:27:18,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-24 23:27:18,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-24 23:27:18,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2020-10-24 23:27:18,047 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2020-10-24 23:27:18,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:18,048 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2020-10-24 23:27:18,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-24 23:27:18,048 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2020-10-24 23:27:18,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-24 23:27:18,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:18,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:18,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-24 23:27:18,258 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:18,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:18,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1743883267, now seen corresponding path program 1 times [2020-10-24 23:27:18,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:27:18,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462830113] [2020-10-24 23:27:18,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-24 23:27:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:18,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-24 23:27:18,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:27:18,365 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:18,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:18,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:18,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:27:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:18,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462830113] [2020-10-24 23:27:18,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:18,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-10-24 23:27:18,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116224100] [2020-10-24 23:27:18,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 23:27:18,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:27:18,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 23:27:18,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-24 23:27:18,508 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 10 states. [2020-10-24 23:27:18,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:18,965 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2020-10-24 23:27:18,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 23:27:18,966 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-10-24 23:27:18,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:18,967 INFO L225 Difference]: With dead ends: 131 [2020-10-24 23:27:18,967 INFO L226 Difference]: Without dead ends: 118 [2020-10-24 23:27:18,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-24 23:27:18,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-24 23:27:18,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2020-10-24 23:27:18,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-24 23:27:18,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2020-10-24 23:27:18,980 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 25 [2020-10-24 23:27:18,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:18,981 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2020-10-24 23:27:18,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 23:27:18,981 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2020-10-24 23:27:18,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-24 23:27:18,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:18,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:19,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-24 23:27:19,197 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:19,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:19,198 INFO L82 PathProgramCache]: Analyzing trace with hash 839729769, now seen corresponding path program 1 times [2020-10-24 23:27:19,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:27:19,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1368906574] [2020-10-24 23:27:19,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-10-24 23:27:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:19,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-24 23:27:19,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:27:19,305 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:19,345 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:19,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:19,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:27:19,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:19,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1368906574] [2020-10-24 23:27:19,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:19,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2020-10-24 23:27:19,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588581177] [2020-10-24 23:27:19,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 23:27:19,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:27:19,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 23:27:19,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-24 23:27:19,470 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand 11 states. [2020-10-24 23:27:19,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:19,930 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2020-10-24 23:27:19,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 23:27:19,931 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-24 23:27:19,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:19,932 INFO L225 Difference]: With dead ends: 114 [2020-10-24 23:27:19,932 INFO L226 Difference]: Without dead ends: 78 [2020-10-24 23:27:19,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-10-24 23:27:19,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-24 23:27:19,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-10-24 23:27:19,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-24 23:27:19,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2020-10-24 23:27:19,942 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 25 [2020-10-24 23:27:19,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:19,942 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2020-10-24 23:27:19,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 23:27:19,942 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2020-10-24 23:27:19,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-24 23:27:19,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:19,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:20,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-10-24 23:27:20,156 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:20,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:20,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1281876129, now seen corresponding path program 1 times [2020-10-24 23:27:20,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:27:20,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660111451] [2020-10-24 23:27:20,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-10-24 23:27:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:20,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-24 23:27:20,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:27:20,268 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:20,298 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:20,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:20,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:27:20,342 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-10-24 23:27:20,342 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-24 23:27:20,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:20,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660111451] [2020-10-24 23:27:20,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:20,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-24 23:27:20,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935480055] [2020-10-24 23:27:20,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 23:27:20,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:27:20,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 23:27:20,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-24 23:27:20,384 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 9 states. [2020-10-24 23:27:20,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:20,743 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2020-10-24 23:27:20,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-24 23:27:20,743 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-24 23:27:20,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:20,745 INFO L225 Difference]: With dead ends: 84 [2020-10-24 23:27:20,745 INFO L226 Difference]: Without dead ends: 74 [2020-10-24 23:27:20,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-24 23:27:20,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-24 23:27:20,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-24 23:27:20,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-24 23:27:20,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2020-10-24 23:27:20,753 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 25 [2020-10-24 23:27:20,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:20,753 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2020-10-24 23:27:20,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 23:27:20,753 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2020-10-24 23:27:20,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-24 23:27:20,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:20,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:20,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-24 23:27:20,970 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:20,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:20,971 INFO L82 PathProgramCache]: Analyzing trace with hash -144403189, now seen corresponding path program 1 times [2020-10-24 23:27:20,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:27:20,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434630909] [2020-10-24 23:27:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-10-24 23:27:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:21,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-24 23:27:21,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:27:21,117 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:21,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:21,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:27:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:21,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434630909] [2020-10-24 23:27:21,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:21,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-10-24 23:27:21,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116216950] [2020-10-24 23:27:21,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 23:27:21,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:27:21,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 23:27:21,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-24 23:27:21,514 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand 10 states. [2020-10-24 23:27:21,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:21,872 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2020-10-24 23:27:21,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-24 23:27:21,873 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-10-24 23:27:21,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:21,874 INFO L225 Difference]: With dead ends: 82 [2020-10-24 23:27:21,874 INFO L226 Difference]: Without dead ends: 74 [2020-10-24 23:27:21,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-10-24 23:27:21,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-24 23:27:21,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-24 23:27:21,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-24 23:27:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-10-24 23:27:21,882 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 26 [2020-10-24 23:27:21,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:21,882 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-10-24 23:27:21,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 23:27:21,882 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-10-24 23:27:21,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-24 23:27:21,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:21,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:22,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-10-24 23:27:22,095 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:22,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:22,096 INFO L82 PathProgramCache]: Analyzing trace with hash -953749815, now seen corresponding path program 1 times [2020-10-24 23:27:22,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:27:22,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405687840] [2020-10-24 23:27:22,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-10-24 23:27:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:22,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-24 23:27:22,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:27:22,282 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:22,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:22,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:27:22,565 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-24 23:27:22,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:22,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405687840] [2020-10-24 23:27:22,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:22,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2020-10-24 23:27:22,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758491224] [2020-10-24 23:27:22,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-24 23:27:22,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:27:22,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-24 23:27:22,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-10-24 23:27:22,742 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 16 states. [2020-10-24 23:27:23,806 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-10-24 23:27:24,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:24,721 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2020-10-24 23:27:24,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-24 23:27:24,722 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 26 [2020-10-24 23:27:24,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:24,723 INFO L225 Difference]: With dead ends: 154 [2020-10-24 23:27:24,723 INFO L226 Difference]: Without dead ends: 134 [2020-10-24 23:27:24,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2020-10-24 23:27:24,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-24 23:27:24,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 72. [2020-10-24 23:27:24,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-24 23:27:24,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2020-10-24 23:27:24,742 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 26 [2020-10-24 23:27:24,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:24,743 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2020-10-24 23:27:24,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-24 23:27:24,743 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2020-10-24 23:27:24,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-24 23:27:24,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:24,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:24,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-10-24 23:27:24,959 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:24,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:24,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1548503636, now seen corresponding path program 1 times [2020-10-24 23:27:24,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:27:24,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281607491] [2020-10-24 23:27:24,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-10-24 23:27:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:25,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-24 23:27:25,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:27:25,093 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:25,094 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:25,118 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:25,469 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2020-10-24 23:27:25,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:25,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:27:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:25,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281607491] [2020-10-24 23:27:25,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:25,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 15 [2020-10-24 23:27:25,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796659518] [2020-10-24 23:27:25,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-24 23:27:25,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:27:25,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-24 23:27:25,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-24 23:27:25,757 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand 15 states. [2020-10-24 23:27:26,742 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-10-24 23:27:27,420 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-24 23:27:28,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:28,353 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2020-10-24 23:27:28,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-24 23:27:28,354 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2020-10-24 23:27:28,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:28,355 INFO L225 Difference]: With dead ends: 195 [2020-10-24 23:27:28,355 INFO L226 Difference]: Without dead ends: 158 [2020-10-24 23:27:28,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=455, Invalid=1437, Unknown=0, NotChecked=0, Total=1892 [2020-10-24 23:27:28,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-24 23:27:28,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 43. [2020-10-24 23:27:28,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-24 23:27:28,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-10-24 23:27:28,366 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 27 [2020-10-24 23:27:28,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:28,366 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-10-24 23:27:28,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-24 23:27:28,366 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-10-24 23:27:28,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-24 23:27:28,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:28,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:28,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-10-24 23:27:28,582 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:28,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:28,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1423958792, now seen corresponding path program 1 times [2020-10-24 23:27:28,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:27:28,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587381280] [2020-10-24 23:27:28,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-10-24 23:27:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:28,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-24 23:27:28,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:27:28,706 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:28,989 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2020-10-24 23:27:29,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:29,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:27:29,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:29,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587381280] [2020-10-24 23:27:29,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:29,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2020-10-24 23:27:29,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460624007] [2020-10-24 23:27:29,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 23:27:29,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:27:29,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 23:27:29,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-24 23:27:29,208 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 12 states. [2020-10-24 23:27:30,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:30,580 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2020-10-24 23:27:30,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-24 23:27:30,581 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-10-24 23:27:30,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:30,582 INFO L225 Difference]: With dead ends: 125 [2020-10-24 23:27:30,583 INFO L226 Difference]: Without dead ends: 101 [2020-10-24 23:27:30,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2020-10-24 23:27:30,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-24 23:27:30,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 41. [2020-10-24 23:27:30,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-24 23:27:30,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-24 23:27:30,591 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2020-10-24 23:27:30,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:30,591 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-24 23:27:30,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 23:27:30,592 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-24 23:27:30,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-24 23:27:30,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:30,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:30,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-10-24 23:27:30,806 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:30,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:30,807 INFO L82 PathProgramCache]: Analyzing trace with hash 489956430, now seen corresponding path program 1 times [2020-10-24 23:27:30,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:27:30,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436786763] [2020-10-24 23:27:30,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-10-24 23:27:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:30,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-24 23:27:30,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:27:30,937 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:30,959 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:30,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:27:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:31,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436786763] [2020-10-24 23:27:31,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:31,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-10-24 23:27:31,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71305929] [2020-10-24 23:27:31,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 23:27:31,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:27:31,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 23:27:31,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-24 23:27:31,275 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 10 states. [2020-10-24 23:27:31,786 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-10-24 23:27:32,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:32,190 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-10-24 23:27:32,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 23:27:32,191 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-24 23:27:32,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:32,191 INFO L225 Difference]: With dead ends: 52 [2020-10-24 23:27:32,192 INFO L226 Difference]: Without dead ends: 41 [2020-10-24 23:27:32,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-24 23:27:32,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-24 23:27:32,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-24 23:27:32,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-24 23:27:32,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-24 23:27:32,197 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2020-10-24 23:27:32,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:32,197 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-24 23:27:32,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 23:27:32,198 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-24 23:27:32,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-24 23:27:32,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:32,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:32,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-10-24 23:27:32,410 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:32,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:32,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1191021008, now seen corresponding path program 1 times [2020-10-24 23:27:32,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:27:32,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215952331] [2020-10-24 23:27:32,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2020-10-24 23:27:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:32,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-24 23:27:32,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:27:32,526 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:32,548 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:32,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:32,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:27:32,638 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-10-24 23:27:32,639 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-24 23:27:32,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:32,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215952331] [2020-10-24 23:27:32,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:32,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2020-10-24 23:27:32,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050774864] [2020-10-24 23:27:32,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-24 23:27:32,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:27:32,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-24 23:27:32,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-24 23:27:32,818 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 14 states. [2020-10-24 23:27:33,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:33,634 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-10-24 23:27:33,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 23:27:33,634 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2020-10-24 23:27:33,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:33,635 INFO L225 Difference]: With dead ends: 55 [2020-10-24 23:27:33,635 INFO L226 Difference]: Without dead ends: 41 [2020-10-24 23:27:33,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-10-24 23:27:33,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-24 23:27:33,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-24 23:27:33,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-24 23:27:33,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-24 23:27:33,642 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2020-10-24 23:27:33,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:33,642 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-24 23:27:33,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-24 23:27:33,642 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-24 23:27:33,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-24 23:27:33,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:33,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:33,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-10-24 23:27:33,852 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:33,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:33,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1654102483, now seen corresponding path program 1 times [2020-10-24 23:27:33,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:27:33,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94401172] [2020-10-24 23:27:33,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2020-10-24 23:27:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:33,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-24 23:27:33,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:27:33,988 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 23:27:34,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:34,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:27:34,175 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-24 23:27:34,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:34,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94401172] [2020-10-24 23:27:34,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:34,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-10-24 23:27:34,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080755062] [2020-10-24 23:27:34,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-24 23:27:34,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:27:34,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-24 23:27:34,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-24 23:27:34,248 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 12 states. [2020-10-24 23:27:34,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:34,949 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2020-10-24 23:27:34,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 23:27:34,949 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-24 23:27:34,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:34,950 INFO L225 Difference]: With dead ends: 79 [2020-10-24 23:27:34,950 INFO L226 Difference]: Without dead ends: 61 [2020-10-24 23:27:34,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-10-24 23:27:34,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-24 23:27:34,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2020-10-24 23:27:34,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-24 23:27:34,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-10-24 23:27:34,959 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 33 [2020-10-24 23:27:34,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:34,959 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-10-24 23:27:34,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-24 23:27:34,959 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-10-24 23:27:34,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-24 23:27:34,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:27:34,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:27:35,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2020-10-24 23:27:35,173 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:27:35,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:27:35,173 INFO L82 PathProgramCache]: Analyzing trace with hash 798574185, now seen corresponding path program 1 times [2020-10-24 23:27:35,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:27:35,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574380182] [2020-10-24 23:27:35,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2020-10-24 23:27:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:27:35,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 23:27:35,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:27:35,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:35,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:27:35,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:27:35,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574380182] [2020-10-24 23:27:35,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:27:35,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-10-24 23:27:35,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436448278] [2020-10-24 23:27:35,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 23:27:35,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:27:35,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 23:27:35,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 23:27:35,319 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-10-24 23:27:35,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:27:35,353 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-10-24 23:27:35,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 23:27:35,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-24 23:27:35,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:27:35,354 INFO L225 Difference]: With dead ends: 39 [2020-10-24 23:27:35,354 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 23:27:35,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 23:27:35,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 23:27:35,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 23:27:35,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 23:27:35,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 23:27:35,355 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-10-24 23:27:35,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:27:35,355 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 23:27:35,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 23:27:35,356 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 23:27:35,356 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 23:27:35,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2020-10-24 23:27:35,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 23:27:35,865 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 119 [2020-10-24 23:27:36,018 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 125 [2020-10-24 23:27:36,141 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 110 [2020-10-24 23:27:36,389 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 106 [2020-10-24 23:27:37,290 WARN L193 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 39 [2020-10-24 23:27:38,034 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 27 [2020-10-24 23:27:38,342 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 23 [2020-10-24 23:27:39,010 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 33 [2020-10-24 23:27:39,879 WARN L193 SmtUtils]: Spent 868.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 32 [2020-10-24 23:27:40,708 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 32 [2020-10-24 23:27:41,484 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 38 [2020-10-24 23:27:42,759 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 105 DAG size of output: 42 [2020-10-24 23:27:42,995 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 23 [2020-10-24 23:27:43,063 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 23:27:43,063 INFO L274 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-10-24 23:27:43,063 INFO L274 CegarLoopResult]: For program point L36(lines 36 42) no Hoare annotation was computed. [2020-10-24 23:27:43,064 INFO L274 CegarLoopResult]: For program point L69-2(line 69) no Hoare annotation was computed. [2020-10-24 23:27:43,064 INFO L274 CegarLoopResult]: For program point L36-1(lines 36 42) no Hoare annotation was computed. [2020-10-24 23:27:43,064 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-24 23:27:43,064 INFO L274 CegarLoopResult]: For program point L69-3(lines 69 70) no Hoare annotation was computed. [2020-10-24 23:27:43,064 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-24 23:27:43,064 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-10-24 23:27:43,064 INFO L274 CegarLoopResult]: For program point L69-5(lines 69 85) no Hoare annotation was computed. [2020-10-24 23:27:43,065 INFO L274 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-10-24 23:27:43,065 INFO L274 CegarLoopResult]: For program point L69-7(lines 69 85) no Hoare annotation was computed. [2020-10-24 23:27:43,065 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-24 23:27:43,065 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-24 23:27:43,065 INFO L274 CegarLoopResult]: For program point L53(line 53) no Hoare annotation was computed. [2020-10-24 23:27:43,065 INFO L274 CegarLoopResult]: For program point L53-2(line 53) no Hoare annotation was computed. [2020-10-24 23:27:43,065 INFO L270 CegarLoopResult]: At program point L53-3(lines 45 54) the Hoare annotation is: (let ((.cse1 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_fmax_float_~y .cse1) .cse2) (and (not (fp.eq .cse1 .cse1)) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse0) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 .cse2 (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|)))) [2020-10-24 23:27:43,065 INFO L274 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-10-24 23:27:43,065 INFO L274 CegarLoopResult]: For program point L70-2(line 70) no Hoare annotation was computed. [2020-10-24 23:27:43,066 INFO L277 CegarLoopResult]: At program point L87(lines 59 88) the Hoare annotation is: true [2020-10-24 23:27:43,066 INFO L274 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-10-24 23:27:43,067 INFO L274 CegarLoopResult]: For program point L39(lines 39 42) no Hoare annotation was computed. [2020-10-24 23:27:43,067 INFO L274 CegarLoopResult]: For program point L39-1(lines 39 42) no Hoare annotation was computed. [2020-10-24 23:27:43,067 INFO L274 CegarLoopResult]: For program point L81(line 81) no Hoare annotation was computed. [2020-10-24 23:27:43,067 INFO L274 CegarLoopResult]: For program point L81-2(lines 81 84) no Hoare annotation was computed. [2020-10-24 23:27:43,067 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-24 23:27:43,067 INFO L270 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) [2020-10-24 23:27:43,067 INFO L270 CegarLoopResult]: At program point L57-1(line 57) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short16| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) [2020-10-24 23:27:43,067 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 23:27:43,067 INFO L270 CegarLoopResult]: At program point L57-2(line 57) the Hoare annotation is: (let ((.cse0 (not |ULTIMATE.start_main_#t~short20|)) (.cse1 (not |ULTIMATE.start_main_#t~short16|)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (not .cse2)) (and .cse0 .cse1 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse2))) [2020-10-24 23:27:43,068 INFO L270 CegarLoopResult]: At program point L57-3(line 57) the Hoare annotation is: (and (not |ULTIMATE.start_main_#t~short20|) (not |ULTIMATE.start_main_#t~short16|) |ULTIMATE.start_main_#t~short19| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) [2020-10-24 23:27:43,068 INFO L270 CegarLoopResult]: At program point L57-4(line 57) the Hoare annotation is: (let ((.cse0 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse3 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)))) (or (and (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) .cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|)) (and (not (fp.eq .cse3 .cse3)) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse1) (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) .cse0 (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0) .cse1 (= ULTIMATE.start_fmax_float_~y .cse3) .cse2))) [2020-10-24 23:27:43,068 INFO L270 CegarLoopResult]: At program point L57-5(line 57) the Hoare annotation is: (let ((.cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|)) (.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) .cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0) |ULTIMATE.start_main_#t~short24| .cse1 (= ULTIMATE.start_fmax_float_~y (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) .cse2) (and (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) .cse0 |ULTIMATE.start_main_#t~short24| (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|)))) [2020-10-24 23:27:43,068 INFO L270 CegarLoopResult]: At program point L57-6(line 57) the Hoare annotation is: (or (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0))) [2020-10-24 23:27:43,068 INFO L270 CegarLoopResult]: At program point L57-7(line 57) the Hoare annotation is: (and (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) [2020-10-24 23:27:43,068 INFO L274 CegarLoopResult]: For program point L33(lines 33 42) no Hoare annotation was computed. [2020-10-24 23:27:43,069 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-24 23:27:43,069 INFO L274 CegarLoopResult]: For program point L33-1(lines 33 42) no Hoare annotation was computed. [2020-10-24 23:27:43,069 INFO L274 CegarLoopResult]: For program point L25-1(lines 25 29) no Hoare annotation was computed. [2020-10-24 23:27:43,069 INFO L270 CegarLoopResult]: At program point L25-2(lines 25 29) the Hoare annotation is: (let ((.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) (.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 (not .cse1)) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) .cse1 (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~x ULTIMATE.start___fpclassify_float_~x) .cse0))) [2020-10-24 23:27:43,069 INFO L274 CegarLoopResult]: For program point L25-3(lines 22 43) no Hoare annotation was computed. [2020-10-24 23:27:43,069 INFO L274 CegarLoopResult]: For program point L25-5(lines 25 29) no Hoare annotation was computed. [2020-10-24 23:27:43,069 INFO L270 CegarLoopResult]: At program point L25-6(lines 25 29) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x)) (.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0))) (or (and .cse0 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse1) (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse1 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))))) [2020-10-24 23:27:43,069 INFO L274 CegarLoopResult]: For program point L25-7(lines 22 43) no Hoare annotation was computed. [2020-10-24 23:27:43,069 INFO L274 CegarLoopResult]: For program point L50(lines 50 52) no Hoare annotation was computed. [2020-10-24 23:27:43,070 INFO L274 CegarLoopResult]: For program point L75(line 75) no Hoare annotation was computed. [2020-10-24 23:27:43,070 INFO L270 CegarLoopResult]: At program point L42(lines 22 43) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (let ((.cse1 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (and (= ULTIMATE.start_fmax_float_~x .cse1) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~x ULTIMATE.start___fpclassify_float_~x) (fp.eq .cse1 .cse1) .cse0)))) [2020-10-24 23:27:43,070 INFO L270 CegarLoopResult]: At program point L42-1(lines 22 43) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x)) (.cse0 (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (.cse2 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse3 (= ULTIMATE.start_fmax_float_~y (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (not .cse0) (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0) .cse1 .cse2 .cse3 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse0 .cse2 .cse3))) [2020-10-24 23:27:43,070 INFO L274 CegarLoopResult]: For program point L75-2(lines 75 78) no Hoare annotation was computed. [2020-10-24 23:27:43,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:27:43 BoogieIcfgContainer [2020-10-24 23:27:43,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:27:43,126 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:27:43,127 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:27:43,128 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:27:43,129 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:27:11" (3/4) ... [2020-10-24 23:27:43,135 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-24 23:27:43,160 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2020-10-24 23:27:43,161 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-24 23:27:43,162 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-24 23:27:43,162 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-24 23:27:43,192 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (1bv32 == \result && !~fp.eq~FLOAT(x, x)) [2020-10-24 23:27:43,193 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (aux-isnan_float(x) && !isnan_float(y)-aux && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) [2020-10-24 23:27:43,193 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) [2020-10-24 23:27:43,193 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && aux-!isnan_float(x) && isnan_float(y)-aux) && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && ~fp.eq~FLOAT(x, x) [2020-10-24 23:27:43,194 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) || (((((1bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && x == x) && y == y) [2020-10-24 23:27:43,194 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) || (((((((x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && !(0bv32 == \result)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && x == x) && x == x) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) [2020-10-24 23:27:43,194 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(x, x) && y == x) && ~fp.eq~FLOAT(\result, y)) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y)) || ((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) [2020-10-24 23:27:43,194 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((y == x && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y) || (((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && y == x) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) [2020-10-24 23:27:43,195 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((y == res && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y)) || (((((((!~fp.eq~FLOAT(x, x) && y == x) && ~fp.eq~FLOAT(res, y)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, y)) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) [2020-10-24 23:27:43,195 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(x, x) && !(0bv32 == \result)) && ~fp.eq~FLOAT(y, y)) && y == x) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((y == x && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) [2020-10-24 23:27:43,195 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && y == x) && ~fp.eq~FLOAT(res, y)) && ~fp.eq~FLOAT(\result, y)) && aux-isnan_float(x) && !isnan_float(y)-aux) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((y == res && 0bv32 == \result) && aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) [2020-10-24 23:27:43,196 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && !~fp.eq~FLOAT(x, x)) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y) [2020-10-24 23:27:43,196 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y [2020-10-24 23:27:43,243 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 23:27:43,247 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:27:43,249 INFO L168 Benchmark]: Toolchain (without parser) took 33042.72 ms. Allocated memory was 44.0 MB in the beginning and 98.6 MB in the end (delta: 54.5 MB). Free memory was 21.6 MB in the beginning and 52.9 MB in the end (delta: -31.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 16.1 GB. [2020-10-24 23:27:43,249 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 44.0 MB. Free memory was 27.0 MB in the beginning and 26.9 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:27:43,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.01 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 30.3 MB in the beginning and 40.0 MB in the end (delta: -9.8 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-10-24 23:27:43,250 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.46 ms. Allocated memory is still 54.5 MB. Free memory was 40.0 MB in the beginning and 37.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:27:43,251 INFO L168 Benchmark]: Boogie Preprocessor took 42.58 ms. Allocated memory is still 54.5 MB. Free memory was 37.9 MB in the beginning and 36.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:27:43,251 INFO L168 Benchmark]: RCFGBuilder took 853.86 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 26.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2020-10-24 23:27:43,252 INFO L168 Benchmark]: TraceAbstraction took 31569.71 ms. Allocated memory was 54.5 MB in the beginning and 98.6 MB in the end (delta: 44.0 MB). Free memory was 26.0 MB in the beginning and 59.2 MB in the end (delta: -33.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 16.1 GB. [2020-10-24 23:27:43,252 INFO L168 Benchmark]: Witness Printer took 121.76 ms. Allocated memory is still 98.6 MB. Free memory was 59.2 MB in the beginning and 52.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-10-24 23:27:43,257 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 44.0 MB. Free memory was 27.0 MB in the beginning and 26.9 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 370.01 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 30.3 MB in the beginning and 40.0 MB in the end (delta: -9.8 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.46 ms. Allocated memory is still 54.5 MB. Free memory was 40.0 MB in the beginning and 37.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.58 ms. Allocated memory is still 54.5 MB. Free memory was 37.9 MB in the beginning and 36.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 853.86 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 26.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 31569.71 ms. Allocated memory was 54.5 MB in the beginning and 98.6 MB in the end (delta: 44.0 MB). Free memory was 26.0 MB in the beginning and 59.2 MB in the end (delta: -33.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 16.1 GB. * Witness Printer took 121.76 ms. Allocated memory is still 98.6 MB. Free memory was 59.2 MB in the beginning and 52.9 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(x, x) && y == x) && ~fp.eq~FLOAT(\result, y)) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y)) || ((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (1bv32 == \result && !~fp.eq~FLOAT(x, x)) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((((y == x && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y) || (((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && y == x) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(x, x) && !(0bv32 == \result)) && ~fp.eq~FLOAT(y, y)) && y == x) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((y == x && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && y == x) && ~fp.eq~FLOAT(res, y)) && ~fp.eq~FLOAT(\result, y)) && aux-isnan_float(x) && !isnan_float(y)-aux) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((y == res && 0bv32 == \result) && aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) || (((((((x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && !(0bv32 == \result)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && x == x) && x == x) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((y == res && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y)) || (((((((!~fp.eq~FLOAT(x, x) && y == x) && ~fp.eq~FLOAT(res, y)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, y)) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && aux-!isnan_float(x) && isnan_float(y)-aux) && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && ~fp.eq~FLOAT(x, x) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) || (((((1bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && x == x) && y == y) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (aux-isnan_float(x) && !isnan_float(y)-aux && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (1bv32 == \result && !~fp.eq~FLOAT(x, x)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 49 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 23.9s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 12.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1146 SDtfs, 2441 SDslu, 4709 SDs, 0 SdLazy, 1986 SolverSat, 266 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 768 SyntacticMatches, 12 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 578 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 14 PreInvPairs, 48 NumberOfFragments, 616 HoareAnnotationTreeSize, 14 FomulaSimplifications, 626146 FormulaSimplificationTreeSizeReduction, 0.8s HoareSimplificationTime, 14 FomulaSimplificationsInter, 38333 FormulaSimplificationTreeSizeReductionInter, 6.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 479 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 920 ConstructedInterpolants, 33 QuantifiedInterpolants, 95765 SizeOfPredicates, 147 NumberOfNonLiveVariables, 1698 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...